statistics

Q: E(10X +3) =_______

(a) :  10 E(X)
(b) :   E(X)+3
(c) :  10 E(X)+3
(d) :   100E(X)
(e) :  NONE
Answer:  10 E(X)+3
Explanation:  

Q: If a distribution is abnormally tall and peaked, then is can be said that the distribution is:

(a) :  leptokurtic
(b) :  pyrokurtic
(c) :   platykurtic
(d) :  mesokurtic
(e) :  NONE
Answer:  leptokurtic
Explanation:  

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